de Mello Elaine Duarte Artuso, Pagnoncelli Rogério Miranda, Munin Egberto, Filho Manoel Sant'Ana, de Mello Guilherme Paulo Scarpel, Arisawa Emília Angela Loschiavo, de Oliveira Marília Gerhardt
Faculdade de Odontologia, Programa de Pós-Graduação em CTBMF, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
Lasers Med Sci. 2008 Jul;23(3):253-60. doi: 10.1007/s10103-007-0475-5. Epub 2007 Jul 14.
This study compares the bone repair process after ostectomies performed either with the erbium:yttrium-aluminum-garnet (Er:YAG) laser or with the low-speed bur drilling. Eighteen rats were used for this study. In the control group, the ostectomy was performed with a low-speed bur drilling. In the experimental group, the ostectomy was made with an Er:YAG laser (500 mJ, 10 Hz). At 7 and 14 days after surgery, the experimental group presented earlier bone repair in comparison to the control group. The experimental group presented an altered layer of approximately 24-microm thickness, whereas the control group did not present any altered layer in the margins of the ostectomies. At 21 days, the histological features of the two groups were very similar, although the altered layer could still be seen. The Er:YAG laser successfully promoted the ablation of the bone tissue, but caused some thermal damage at the margins of the ostectomies.
钇铝石榴石（Er:YAG）激光或低速牙钻进行截骨术后的骨修复过程。本研究使用了18只大鼠。对照组采用低速牙钻进行截骨术。实验组采用Er:YAG激光（500 mJ，10 Hz）进行截骨术。术后7天和14天，实验组与对照组相比骨修复更早。实验组出现了一层厚度约为24微米的改变层，而对照组在截骨边缘未出现任何改变层。在21天时，两组的组织学特征非常相似，尽管仍可看到改变层。Er:YAG激光成功促进了骨组织的消融，但在截骨边缘造成了一些热损伤。
